revenge seeking ex-police officer christopher dorner seemingly came to a fiery and violent end yesterday in big bear lake, california. but many unanswered questions remain tonight about the former lapd officer and what sent him on a killing spree that claimed four lives, including the daughter of his former boss. according to dorner's manifesto, which he issued, he was trying to clear his name after being fired by the lapd and back in 2009, which is four years ago. he claims specific people he wanted to go after, saying, quote, they have awoken a sleeping giant. one person who may have some insight into what drove dorner or anyone like him to turn to violence is bill bratton, who was the l.a. police chief at the time of dorner's firing. he is also a much respected police commissioner the city of new york. he was much affected by dorner's chilly manifesto, as was i. do you have a sense of how this is going to go down in history, this case? >> i think it is historic in the sense there are many unique aspects to it, the scale, the magnitude, and some aspects of it.